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Patent:CH164250
| Patent: | CH 164250 |
| Title: | Machine permettant d'effectuer des calculs |
| Date: | 30.09.1933 |
| Place: | |
| Country: | Switzerland |
| Person: | Couffignal, Pierre Louis (P) |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  CH164250 |
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